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In 1987, NDDB initiated a comprehensive programme of
milk recording and progeny testing for cattle and buffaloes
- the 'Dairy Herd Improvement Programme Actions (DIPA)'.
DIPA involves a chain of meticulously planned,
carefully executed steps which are rigorously monitored
to produce superior proven sires. The programme
is being implemented in selected districts where the
artificial insemination infrastructure is well established.
The sequence of DIPA programme
events - registration of dams; their insemination;
pregnancy diagnosis and calving; birth details of female
calves; body weights of calves; insemination; pregnancy
diagnosis; calving and monthly recording of milk and
fat test for whole lactation of daughters born - are
recorded through the Management Information System (MIS-DIPA)
developed for the programme. Data is collected on a
monthly basis in different formats and is processed
at the union's headquarters.
Bulls are ranked on the
basis of breeding values estimated using a sire model
employing the Best Linear Unbiased Prediction method
(BLUP).
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